.-I can smell something _____ in the kitchen. Can I call you back in a minute? - OK.
Without enough food, many birds didn’t ________ the winter.
---Let’s go to the park tomorrow morning.---Sorry, I’ve got an important appointment at 9 o’clock and I can’t _______ to miss it.
Little Tom was so enthusiastic about learning Chinese and after six months, he could speak it ______ fluently.
This is a complex operation. A team of nurses _____ the doctor in performing the operation.
—Shall we make an appointment at 9 o’clock this Sunday morning?—________. I will be available the whole morning.